<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Hello World(双向绑定)</title>
</head>
<body>
<div id="example">
    {{ message }}
    <input v-model="message">
</div>
<script src="../js/vue.js"></script>
<script>
    new Vue({
        el: '#example',
        data: {
            message: 'Hello World'
        }
    });
</script>
</body>
</html>